Non-Markovian random unitary qubit dynamics

作者：Chruscinski Dariusz^*; Wudarski Filip A

来源：Physics Letters, Section A: General, Atomic and Solid State Physics , 2013, 377(21-22): 1425-1429.

DOI：10.1016/j.physleta.2013.04.020

• Quantum dynamics
• Non-Markovian evolution
• Random unitary dynamics

We compare two approaches to non-Markovian quantum evolution: one based on the concept of divisible maps and the other one based on distinguishability of quantum states. The former concept is fully characterized in terms of local generator whereas it is in general not true for the latter one. A simple example of random unitary dynamics of a qubit shows the intricate difference between those approaches. Moreover, in this case both approaches are fully characterized in terms of local decoherence rates.

• 出版日期2013-9-2